For deployments where the 5G control (5GC) plane function is in the cloud and the user plane function (UPF) is on-prem, there are number issues that may be result of unstable wide area network (WAN) link connection. This solution addresses these issues by introducing an proxy edge function on-premises and a corresponding proxy peer in the cloud.
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Srivastava, Anal; Gundavelli, Sri; Srivastava, Vimal; and Bull, Oliver, "PROXY EDGE FUNCTION FOR CLOUD BASED 5G CORE", Technical Disclosure Commons, (September 03, 2020)